Fastening inserting machine



Dec. 7, 1948. LAWSON I 2,455,370

FASTENING INSERTING MACHINE Original Filed March 14, 1945 5 Sheets-Shea? l R; H. LAWSON FASTENING INSERTING MACHINE Original Filed Mapch 14, 1945 5 Sheets-Sheet 2 R. H. LAWSON FASTENING INSERTING MACHINE 7 Original Filed March 14, 1945.

Dec. 7, 1948.

5 Sheets-Sheet 3 lnvenfor Robert H Lawson Dec. 7, 1948. I LAWSON 2,455,370

FASTENING INSERTING MACHINE.

Original Filed March 14, 1945 5 Sheets-Sheet 4 d X I 2/8 2 4 4 270 I a24 J 330 L 274 I 536 Q1 lnvenfor 330 Haber! H Lawson Q E B in Azorney 84 [ll 1 g;

Dec. 7, 1948. R. H. LAWSON 2,455,370

FASTENING INSERTING MACHINE Original Fild March 14, 1945 5 Sheets-Sheet 5 .330 Q 3 Faber! HLawson Patented Dec. 7, 1948 STATS OFFICE FASTENING IN SERTING MACHINE Original application March 14, 1945, Serial No.

Divided and this application March 7, 1946, Serial No. 652,582

4 Claims.

This invention relates to fastening inserting machines and is herein illustrated as applied to a machine of the type disclosed in application for United States Letters Patent Serial No. 582,647, filed March 14, 1945, of which the present application is a division.

Machines of the above mentioned type are particularly adapted progressively to secure portions of a shoe upper to a ribbed sole member after these portion of the upper have been worked into lasted relation to the sole member. Ribbed sole members are, for example, used in the form of lipped insoles in the manufacture of welt shoes. In uch machines the fastenings to be driven are produced from a continuous strand of fastening material, such as Wire, mechanism being provided for intermittently feeding or advancing the wire into a wire severing mechanism where the leading end portion of the wire is severed from the strand and transferred to a position from which it may be inserted into the work parts as a fastening. ihe fastening is inserted usually by a driver which operates in a throat member to which the fastening is transferred into position to be operate-d. upon by the driver.

An object of the present invention is to provide in machines of the above mentioned type, improved mechanisms for intermittently feeding the strand of fastening material predetermined and adjustable amounts, for severing the leading end portion from the strand to produce a fastening, for presenting the fastening in fastenin inserting position and for driving the fastening into the work while the throat member is in firm contact with the work.

To this end, and in accordance with one feature of the invention, the strand feeding mechanism which, as a rule, includes a strand engaging feeding member, such as a roll, is provided with a ratchet and pawl drive for the feeding member and a member adapted to mask a part of the ratchet to limit the operative stroke of the pawl which serves to rotate the ratchet and thereby to actuate the strand feeding member. Moreover, the masking member cooperating with the ratchet is arranged for adjustment with relation to the ratchet, With the result that the extent of rotation imparted to the ratchet by the pawl, and hence the length of strand fed, may be varied by var, in: the position of the masking member With relation to the ratchet.

The illustrated machine is provided with improved wire severing mechanism comprising a wire shearing roll movable between two predetermined positions. In one of these positions, the

shearing roll is adapted to receive the leading end portion of the strand of wire as it is being advanced by the strand feeding mechanism. On movement of the shearing roll into its other predetermined position, it is caused to sever the leading end portion of the wire and transfer that portion, constituting a fastening, into its fastening inserting position. Conveniently, the shearing roll is mounted in the throat member of the machine and in its last mentioned predetermined position, it presents a fastening in the line of drive of the fastening inserting driver. It is of critical importance that the shearing member not only be correctly located in either of its above mentioned two predetermined positions, but also be securely held in these positions for a predetermined period during a cycle of machine operation, particularly so as to prevent the shearing roll from becoming displaced by some extraneous force, for example, the vibration of the machine when in operation. Thus, there is provided, in accordance with another feature of the invention, mechanism, including a spring member, for rotating the shearing roll into its predetermined positions, the spring member being adapted to be tensioned after the movement of the shearing roll into one of its predetermined positions so as to hold the shearing roll firmly in place.

In accordance with still another feature of the invention, mechanism is provided for causing the throat member to move into engagement with the work prior to the insertion of a fastening into the work and to cause the driver to move as a unit with the throat member on movement of the latter into work engaging position, further mechanism being provided for then actuating the driver to move with relation to the throat member for the purpose of driving the fastening into the work. More specifically, the driver is actuated by a spring which is adapted to be cocked, locking mechanism being provided for holding the spring in its cocked position and for permitting the driver and the spring to participate in the movement of the throat member into work engaging position. On arrival of the throat member in work engaging position, the locking mechanism is released by cam operated means to free the driver to the action of its spring. This mechanism for aotuat ing the driver is furthermore so constructed and arranged that, after the actuation of the driver, the driver is withdrawn into its cocked position, whereby the throat member is also returned into its initial position.

These and other features of the invention will now be described in detail with reference to the accompanying drawings and will be pointed out in the appended claims.

In the drawings,

Fig. 1 is a view in right hand side elevation of the principal parts of a machine embodying the present invention, with certain parts of the machine broken away;

Fig. 2 is a view in right hand side elevation of mechanism for operating the throat member or wiper and the driver and of wire feeding mechanism with which the machine illustrated in Fig. 1 is provided;

Fig. 3 is a view in left handrsideielevation 'of the present machine, illustrating particularly mechanism for operating wire severing and fastening transferring means;

Fig. 4 is a plan view of the machine illustrated in Fig. l, with certain parts broken away;

Fig. 5 is a detail view of the wiper head and associated mechanism;

Fig. 6 is a sectional view taken along the line of Fig. 5;

Fig. 7 is a sectional View taken along the "line of .Fig. :5;

Fig. '8 is a plan view of the wire feeding mechanism;

Figs.- .9 to ll'i'l'histrate different steps .in lasting and overwiping an upper and securing it in lasted position; and

Fig. .1-2"is a:pl-an'view'of a section through the '1' throat member with a work piece presented thereto, illustrating the driving of the fastenings.

The illustrated fastening inserting machine is particularly adapted progressively (to work a shoe upper U, which is mounted-one lastL, into lasted 1;.

relation to ailipp'ed insole Icarriedon the bottom of the last :and progressively to :secure the marginal portion ofthe upper :13 to the insole :lip by metallic fastenings which are inserted through the margin of "the -itvppe'r iandith'e-lip 0f the insole. The fastenmg' used in the illustrated machine is a sing-l e leggedfastening in thesense that it comprises :a single istraight piece of wire or similar fastening m-aterial. After the upper U has been tension'ed on the last L and a portion of its :margin Worked into :lasted relation to the feather portion and lip of the M18016 1, the fastening :is inserted endwise, straight through the margin of "the upper and the lip, the trailing end of the fastening ifina11yb'ec'omin'g imbedded or countersunk in the surface or side 'of the work whence it was driven (hereinafter :referred to as the side of entry.) and the leading end portion of the fastening emerging from the opposite surface or side of the work which, in'the present case is the rear side or inner side of the insole lip. The emerging leading end portion of :the fastening is then turned back into the work, as the driving of the fastening continues, and caused to penetrate :again the entire thickness'of the work (lip margin of shoe upper) in a reverse direction and tore'emerge atithe sideof entry of the work. The reemergingleading end portion of the fastening thereupon is turned back into the side of entry at a point between the point of entry and the point :of reemergenceso as not to interfere with the countersunk trailing end of the fastening and so :asitoform :a staple-like driven fastening which resembles :a :closediring with the opposite ends overlapping and well anchored within the work.

The organization of the machine The principal operating histrmnentalities 'of the machine and their actuating mechanisms are i contained in or secured to a box-like frame 20 (Figs. 1-4) which is adapted to rest on a support (not shown). The principal work engaging operating instrumentalities of the illustrated machine are a stationary anvil 22 (Figs. 1, 3, 9-12), an upper tensioning gripper 2d, and a wiper 26 through which the fastenings are inserted, by mechanism to be described, into the work, the

:latter being manually presented to the machine operation being repeated and progressing along the lip first at one side and then at the other side of "the insole while the shoe is held in the operators hand and is successively moved or fed by him with relation to the machine to present different portions of the shoe successively to the operating instruinentalities of the machine.

The actuating mechanisms of the various movable operating instrumentalities of the machine are driven from a single cam shaft 28 (Figs. 14) extending transversely of the machine and arranged for rotation in suitable bearings provided in the frame 26. The cam shaft 28 is driven by connections (not shown) to a suitable source of power, the connections including an operator cc-nitrolled'clutch (not shown) which, when maintained engaged, will continue to rotate the cam shaft and thus cause the machine to run through an indefinite number of cycles, one cycle correspending-to one complete revolution of the cam shaft.

The 'wiper head or throat member To wipe progressively portions of the upper U over the insole feather and against the upstanding lip of the insole I after each portion of the upper has been tensioned by the gripper and is held under tension, there is provided a wiper head (Figs. 1, 3, 5) which also functions as a throat member or nozzle in that the fastenings are inserted into the work through that member. The wiper head 80 is of a substantially rectangular shape having a tapering front end and being arranged for reciprocating movement substantially in a horizontal path into and out of engagement with the shoe presented to the machine. The wiper head 80 comprises a main portion 82 (Figs. 5, 6) which is provided at its right hand side (as seen from the front of the machine) with a cover plate 84. The wiper head is supported for movement toward and from the work on a front link 86 ('Figs. 1, 2) and a parallel back link 88, the two links having the same effective length. The upper ends 'of the links are pivota-lly connected to the wiper head 88. The lower end of the front link 86 is mounted to rotate freely on a rod 90 secured in the machine frame and the lower end of the back link 88 is mounted to rotate freely on a rod-92 secured in the machine frame. Pivotal connection between the upper end of the front link'86 and the wiper head'80 is established in the following manner. Secured to the left hand side of the wiper head 80 is an outwardly and downwardly extending bracket 94 (Figs. 3, 6) which carries a horizontal pin 96 extending through a slot 98 provided in the upper end of the front link 86. Thus a lost motion is provided between the link .86 and the wiper head for purposes to be described. To actuate the wiper head there is provided a bell crank lever I00 (Fig. 2) which acts yieldingly on the front link 80 to advance the wiper head 00 toward the work. One arm of the bell crank lever I00 carries a roll or cam follower I02 engaging a cam groove provided in one face of a cam disk I04. The just mentioned yielding operation of the link 86 by the bell crank lever I00 is accomplished in the following manner. There is provided in the front link 8'6 a socket I06 and a similar socket I08 is provided in the upwardly extending arm of the bell crank lever I00. The two sockets are axially alined and house a spring I I0 surrounding a headed bolt I I 2 extending from the front side of the link 86 through both sockets and through to the rear side of the upwardly extending arm of the bell crank lever I00 where it carries lock nuts bearing against said arm. As will be noted from an inspection of Fig. 2, movement of the bell crank member I00 in a counterclockwise direction will cause a yielding movement of the link 86 in the same direction to advance the wiper head toward the work but movement of the bell crank member I00 in a clockwise direction will produce a positive movement of the link 06 in the same direction for purposes to be described, this being due to the provision of the bolt H2 and the lock nuts carried by it.

It should be noted that since the two links 86, 83 carrying the wiper head 80 have the same effective length, a parallel motion results. The rearward movement of the wiper head 80, which is produced by separate mechanism to be described, is adjustably determined by the following mechanism. The back link 88 is provided with a tail piece II4 which has a socket II6 carrying a screw I20 secured in place by a nut I22, the lower end of the screw on rearward movement of the wiper head 80 being adapted to engage an abutment II 8 provided on the lower portion of the machine frame.

The wire feeding mechanism As previously explained the fastenings to be inserted by the illustrated machine are formed therein from a continuous strand of fastening material, such as wire, which is fed forwardl in the machine step by step and the leading end portion of which is severed to form a single legged straight fastening. The strand of fastening material is preferably wound up on a reel (not shown) which is conveniently mounted for rotation on the machine frame and from which the wire passes through suitable guides (not shown) into a wire feeding mechanism. The wire feeding mechanism includes an intermittently rotated feed wheel I30 (Fig. 8) with which cooperates a pressure wheel I32, the wire passing between the two wheels. The pressure wheel is rotatably mounted in a supporting lever I34 pivotally secured at I 36 to a rearward extension I38 of the main portion 82 of the wiper head. The wheel I32 is urged toward the feed wheel I30 and to this end there is provided a bolt I40 one end of which is in threaded engagement with a tapped hole provided in a shoulder portion of the rearward extension I38. The bolt I40 extends through a hole provided in a tail piece I42 of the supporting lever I34 and carries a spring I44 which is compressed between the head of the bolt and the tail piece, the spring thus tending to rotate the supporting lever I34 in a counterclockwise direction, as viewed in Fig. 8, so as to urge the wheel I32 into engagement with the wire and to hold the wire against the feed wheel I30.

Mechanism is provided for rendering the wire feeding mechanism inoperative and to this end there is pivotally secured to the rearward extension I38 a hand lever I46. The hub portion of the hand lever is slabbed off at one side to permit the supporting lever I34 to be so rotated that the pressure wheel I32 is moved into operative position in engagement with the wire. Rotation of the hand lever I40 causes the round part of the hub of that lever to engage a right hand extension of the supporting lever I34 and rotate this lever in a clockwise direction, as viewed in Fig. 8, thus moving the pressure wheel I32 away from the feed wheel I30 and interruptin the operation of the Wire feeding mechanism.

The feed wheel I30 is loosely rotatable on a vertical stub shaft I48 which is rotatably mounted in bearings provided in the rearward extension I38. The stub shaft M0 is adapted to be rocked and to this end carries a pinion I50 secured to the lower end thereof. Loosely rotatable on the stub shaft M8 and fixedly secured to the feed wheel I30 is a ratchet wheel I52 which is adapted to be engaged by a pawl I54 pivotally carried on an arm I50 clamped to the stub shaft I43. The pawl I54 is biased by a spring I58 to engage a tooth of the ratchet I52 so that upon movement of the arm I55 in a counterclockwise direction, as viewed in Fig. 8, the ratchet I52 and the feed Wheel I36 will be rotated. On reverse movement of the arm H50 in the clockwise direction, the pawl I54 is caused to ride idly back over the teeth of the ratchet wheel I52 so as to engage, after the conclusion of this idle motion, another tooth of the ratchet wheel, preparatory to imparting another forward rotation to the ratchet wheel I52 and the feed wheel I39.

The amount of rotation imparted to the feed wheel I 30 determines the extent of the wire feed and thus the length of the fastening to be formed from the wire. This amount is adjustable and, to this end, there is provided a pawl-like shield or guard I00 adapted to mask a portion of the ratchet wheel I52. The shield IE0 is pivotally secured at I02 to an arm I5 5 loosely rotatable on the stub shaft I48. The shield Hill is so arranged that it is adapted to mask that portion of the ratchet which the pawl I 5% would normally engage at the conclusion of its idle backward motion. A pin I56, carried by the arm I0 8 has coiled about it a spring I08 one end of which is in engagement with the pivot pin I62 and the other with the shield so as to hold the latter in engagement with the ratchet wheel I52. As will be noted from an inspection of Fig. 8 the pawl I54, when moving backward on its idle stroke, is caused to ride up upon the shield I60, with the result that part of its succeeding forward motion is idle in the sense that it does not produce any motion of the ratchet I52 until the pawl I54 has moved out of engagement with the shield 580 and has dropped into the tooth of the ratchet wheel I52 located at the end of the shield I60. The position of the shield I50 with relation to the ratchet wheel I52 is adjustable by an adjusting movement of the arm IIJ I about the stub shaft I48. For this purpose the arm I5=l is provided at its outer end with a segment H0 having on its top face a series of depressions H2 one of which is engaged by a latch II I formed on a hand grip I'IB pivotally secured at I'ifsl (Fig.2) to therearward extension 533 of the wiper head. The lower portion of the hand grip IYB is engaged by a spring pressed plunger I which serves to maintain the latch I14 in engagement a r-cacao 7'. with: one: of the depressions' H21 soas: to holdz the arm. 1 5-4. in. its. adjusted! positionr As the" feed wheel 130v is: rotated" the wire gripped thereagainst bythe pressure" of therwheell l 32" is advanced= and is fed into a tube. L82. (Figs: 5, 8:) which is clamped. at H341 to: the rearward extension. I38 of the wiper head. The front endof this tube is inserted into a: bore provided: in. a wire intake i286 (Figs; 5, 7:) which fits'intda' slot in the cover plateii l: to which it-is secured. The.

wire intake i861 has a-wire'passage I8B through which the wire. is passed. into abar' shaped guide.

member L98 seated. flush in a longitudinal slot in the. back ofthe cover plate: Bi The guide member has on its exposed face along-itudinallyextending groove along which the wire is passed, theopen side of the groove being covered by the main. portion of the wiper head. Thus the wire. is supported all around during the entire course'of itstravel into the wire severing-location. r

As described above,v the" wire feeding mechanism derives its motionfrom the pinion [56 secured to the stub shaft I48 and this pinion is adapted. to be rocked by a rack. bar E92: (Figs. 2, 8) which is rcciprocatedin a slideway 4% provided' in the above mentioned shouldered portion of the rearward extension iiiB-Qf the wiper head. Movement of the rack bar I92 toward the right of Fig. 8- causes rotation of the pinion I56 in a counterclockwisedirection, as viewed in Fig. 8, and thus causes a wire feeding motion tobe irnpa-rtedto' the feed wheel I332 The movement of the rack bar L92- toward theright of Fig. 8 takes place against the resistance of a spring 496 located. in the slideway I94, one end of the spring. engaging the end of the rack bar and the other end' of the spring being backedby a screwliiB- threadedinto the open end of the slideway tat. The main purpose of the spring I96 is to return the rack bar E92 and mechanism associated therewith into their initial positions after a wire feeding motion has been imparted to-the feed wheel Hill. The movement of the rackbar l-fifiineither direction is limited in that a lateral pin' 29!] (Fig, 2.) secured to the rack bar extends through a slot 282 provided in the outer wall of the slideway I64. The forward end of the rack bar is pivotally connected by a double link 204 toa two armed lever 206-rotatably secured by a fulcrum stud 208 to the wiper head. The lever 263' carries. at its lower end a cam roll or cam.

follower Zlfiwhich is held inv engagement with a cam 212. secured to the cam shaft 28.

The'wire severing and fastening transferring mechanism As has been stated, the leading end portion of the wire, each time the wire has been advanced in. the machine, is cut off to form a. fastening which then is inserted endwise into the Work. To this end there is mounted in a circular recess 2 M (Fig. 6) provided in the front end portion of the wiper head 86 a rotatable wire receiving roll 216 provided on its inner surface with a diagonally extending groove adapted to receive the leading end portion of the wire when the wire is being advanced in the machine. This groove is'covered or bridged over by a disk or roll 2l8 of the same diameter as the roll 2|6 which it abuts,.thev disk 2; being located in a circular recess provided inthe cover 84. The disk H8 is secured to the roll 216 by screws or the like. The roll H6 and disk 2l8 are adapted to be rotated between two end positions, namely a; wire receiving position, in which the groove-in the roll 2I6'is alined with the groove-ofthe wire guiding' member I96, the

8; lower:endof which terminates in close proximity tathe' periphery of the roll- 216; and a fastening driving. position or fastening presenting position in which the groove-in: the roll 2.16 is alined with 1 the path. of movement of. a fastening inserting driver. To rotate the roll 2 I6 it is provided with a laterally extendingv stem 226 (Figs. 3; 6) to which is secured an arm 2-22. The arm extends'upwardly in a rearwardly inclined direction and its upper end'is pivotally connected by a link224 to a horizontal rod 226 of substantial length. The rear portion of the rod1226 carries two collars 228 and 230 between which the 'rod extends through a. bushing 232'. Springs 234 and 236: arecarried on the rod 22fi'and are located between the bushing 232 and the collars'2-28 and 230 respectively. The bushing; 232: is pivotally secured to the upper end of a lever 2-38 freely rotatable on the rod 92 and integral with a lever-266 carrying on its extremity a camroll. 242:whic11 is'in engagement with a cam groove? provided in one side of the cam disk I 04; Rotation of theleverst233, 24fl-by thecam groove in'one direction or the other thus causes the wire receiving roll 2.! 6 to be'rotated between the above describedr twopredetermined positions.

rearward' extension 638- of'the' wiper head a pin 248' (Fig; 3-) on which is mounted a splitsleeve 25!! adapted to rotate slightly about the pm 243; The two ends of the split sleeve have oppositely extending internal: threadswhich areengaged by screws 252', 254: The screws are bored centrally to permit the passage therethrough of the rod 226 which also passes; through the sleeve 250'. The rod has fixed to its collars 256, 258% which, on movement. ofthe rod-inonedirection or the-other; are caused to abut against the heads of the screws 252, 254 to limit movement of the rod 226. screws are adjustable and. they are held in adjusted position by binding screws 260' engaging the splitsl'eeve125'6 andbinding the screws 252,

254 against the threaded portions of the sleeve which they engage. Continued operation of'the levers 238', 2461 after: one of the collars 256, 258.

has engaged one of the screws 252, 254 is made possible Owing to' the arrangement of the springs 23'4", 236 which, in this case, will be compressed and thus serve the further purpose of holding the wire receiving roll 2 l 6 in either oneof its two predetermined positions by spring pressure so that the roll may not be jarred out of alinement with 55. the wire. guiding passage'or the path of movement The fastening. driving mechanism For inserting fastenings into the work presented to the machine there is provided a reciprocating driver 262 (Figs. 5, 6) which, in the illustrated example, is extremely thin and of the same-gage as the wire from which the fastenings are formed; The driver is movable in and with relation to the wiperheadsfl and, as will be described, it is guided and covered all around and over its entire length during the entire course of its travel. The driver 262 is movable in a bar' shaped guiding member 264 of rectangular cross section which isseated flush in a longitudinal- Therecess provided in the back face or inside face of the cover 84. The guiding member 264 has extending along the exposed face thereof a groove which serves as the driver passage and which is covered or bridged over, as will be presently described. The driver 262 is connected to a driver bar 266 which is reciprocated in a longitudinal recess provided in the main portion 82 of the Wiper head. To hold the guiding member 264 in place there is provided a stop pin 268 (Fig. 6) driven into the cover ti and abutting the rear end of the guiding member 264 the front end of which is positioned in close proximity to the roll H6. The driver 262 is secured to the driver bar 265 as follows: The rear end of the driver has a lateral fin Eli] which extends into a slot provided in one end of a pin 2l2 carried by the driver bar 2%. The rear end of the driver 262 is engaged by a hardened pin 214 also carried by the driver bar 255 and positioned in tangential relation to the pin The pin 274 is provided with a ridge c.-- h extends into the groove of the guiding member 2% and engages the rear end the driver. As illustrated in Figs. 2 and 6, there is pivotally connected to the rear end of the driver bar 266 a link 2% which in turn is con nected to a driver actuating lever 2718 arranged to swing about a fixed rod 238 and adapted to be rotated by a torsion spring 282 coiled about the hub of the lever 2'18, one end of the spring engaging a pin 2% on the actuating l ver 278 and the other end engaging a pin carried by the above described link 88 supporting the wiper head 28 The actuating lever 2'5'3 is adapted to be held in a cooked position, with the torsion spring 282 loaded, by the engagement of a locking pin 288 provided on the lever 2'38 with a latch 280 pivotally secured to the link 38 and having a depending arm 292 the lower end of which is connected by a link 29% to an arm 29% mounted for free rotation about the rod 283 and provided with an elongated hub 298 to the other end of which is secured a similar arm 3H2 (Fig. 1) carrying a roll adapted to be engaged by the high por-- tion of a cam M36 on the cam shaft 28. As will be noted, the just described cam operated mechanism is adapted to release the actuating lever 2'58 to the force of the loaded spring 282 by tripthe latch The fulcrum pin of the latch 2% has coiled about it a torsion spring 304 which tends to hold the latch 2% in its elevated looking position and against the resistance of which the latch is depressed by the above described cam operated mechanism. The latch 296 has a forwardly ext-ending shelf 3% along which the pin 288 moves after the tripping of the latch on forward and rearward movement of the lever 2'18.

The driver actuating lever 218 is connected to the above described bell crank lever I85), which serves to actuate the wiper head, by a link 3H) the left hand end of which (Fig. 2) is pivotally secured to the upwardly extending arm of the bell crank lever iiifi and the right hand end of which is provided with a slot 352 which is engaged by a pin tit carried by the driver actuating lever 2%. When the wiper head 89 is advanced by the counterclockwise rotation (Fig. 2)

of the bell crank lever iii) and the front link Bii,v

the pin 86 carried by the wiper head 80 is located at the rear end of the slot 98 (Fig. 3) provided at the upper end of the link 3% so that the wiper head 83' is pulled forwardly. by the link 85, the link 83 swinging freely about its rod 92. In view of the link connection 3 l 8 between the bell crank latter has reached its operative position,

is connected remains stationary.

10 lever I0!) and the driver actuating lever 218 and, furthermore, due to the fact that, at that time the pin 3I3 is located at the rear end of the slot 312, the driver actuating lever 2'18 is advanced with the wiper head, with the result that the wiper head and the driver 282 are moved as a unit toward the work. It is to be noted that this advance of the driver and its actuating lever 2753 takes place while the actuating lever 218 is held cocked by the latch 290 which, due to the fact that it is carried by the link 88, is advanced concomitantly with the lever 218. After the wiper head 80 has moved into engagement with the work and has wiped the upper into lasted relation to the insole, the high portion of the earn 3526 becomes active, through theroll 3B9, arms 382, 296 and link 294, to trip the latch 29!? so as to release the actuating lever 218 to the loaded spring 282 which is of considerable strength. This results in the operation of the driver which is moved forwardly in the guide member 264 and through the wire severing roll 2 l 5 while the latter is in its fastening presenting position so as to insert the fastening contained in the roll into the work. This movement of the driver, of course, takes place with relation to the wiper head which is held stationary and incugagernent with the work. The relative movement between the driver and the wiper head, after the is possible due to the provision of the slot 3S2 in the link Sit, enabling the driver actuating lever 278 to be propelled forwardly by the spring 282 while the wiper actuating mechanism to which it Reversely, the bell crank lever It!!! is rotated by its cam Hi l in a clockwise direction, as viewed in Fig. 2, the wiper head 80 is not directly affected by this motion of the bell crank lever 409, this being due to the 10st motion provided between the front link and the wiper head by the slot 98. However, since the lost motion provided between the bell crank lever illll and the driver lever 2'13 by the slot 312 has been taken up as a result of the driver operating forward movement of the lever 218 with relation to the link 3H] causing the pin 3|3 to move to the forward end of the slot 3i2, the driver actuating lever 218 is 7 immediately moved backward on initiation of the above mentioned clockwise rotation of the bell crank lever EGG. This backward movement of the lever 2T8 serves the purpose of loading the torsion spring 282 and cooking the lever 218. Since one end of the spring 282 bears against the rear link 88 supporting the wiper head 80 the rear link 88 also is swung rearwardly thereby retracting the wiper head 80. As described, the rearward movement of the link 88 and the wiper head is terminated by the engagement of the screw with the abutment H8 thus enabling the driver actuating lever 278 to move fully into its cocked position, it being understood that the slot 93 is of sufiicient length to permit such movement of the lever 218, the bell crank lever H38 and the front link 86.

The operative movement of the driver is limited and the extent of this movement is adjustable by the provision of a rod 3M (Figs. 1-4) pivotally secured to the driver actuating lever N8 and extending through an aperature 316 provided in the link 88. Tue rod Sit carries at its rear end a bumper 318 adjustably secured on the rod. The bumper, on operation of the driver, is adapted to strike against the rear face of the link 88 thus 1 1 terminating the operative movement of the driver. This has the additional advantage of forcing, due to the impact of the bumper 3l8 against the link 88, the wiper head 80 into intimate contact With the work while the fastening is inserted.

As already mentioned, the driver on its operative stroke moves through the groove provided in the wire receiving and severing roll 2l6, the roll, of course, first having been rotated into the fastening inserting position in which its groove is in alinement with the driver passage of the guiding member 266. Between the roll 216 and the outer end of the wiper head 86 is provided a nozzle piece 320 (Fig. 6) having a projection or stem 322 extending into a hole provided in the main portion 82 of the wiper head. The nozzle piece 320 is grooved similar to the wire receiving roll 2 l6 and its groove is in alinement with the driver passage and the groove in the roll 2; when the roll is located in its fastening inserting position. The nozzle piece 320 is engaged by a cover piece 324 which also has a projection or stem 326 engaged in a hole provided in the cover plate 84. Moreover, the visible front end of the cover piece 324 has a clenching cavity 328 which serves to engage the leading end portion of the fastening when it reemerges from the side of entry of the work, as has been described. The clenching cavity 328 is so shaped that the extremity of the leading end portion of the fastening is caused to reenter the side of entry of the work at a point located between the point of entry and the point of emergence.

It will be noted that, as a result of the provision of the longitudinal recess in the main portion 82 of the wiper head 86 to accommodate the driver bar 266, the driver cannot be covered by the main portion 82 over the entire extent of its travel in the groove provided in the guide member 264. However, to insure nevertheless that the thin driver is fully supported in any position of its reciprocation, there is provided a movable guard member 336 (Figs. 5, 6, 11) which has somewhat the shape of a long hatchet and is located in a recess provided in the main portion 82 of the wiper head. The guard member 336 has a curved face 63! located in close proximity to the complementary curved front end 333 of the driver bar 266 and is adapted to cover the driver between the driver bar and the roll 216. The guard member 336 is pivotally secured by a pin 332 to the wiper head and has extending downwardly and rearwardly from it an integral arm 334 which is connected by a link 336 (Fig-2) to the rear end of the driver bar 266. As a result, the guard member 330 is caused to swing upwardly on advance of the driver bar 266 to make room for the driver bar while continuing to cover the driver in the diminishing space between the driver bar and the roll 216. Reversely, the guard member is caused to swing downwardly on retraction of the driver bar 266 to insure complete coverage of the driver. However, it will be noted, particularly from an inspection of Fig. 5, that movement of the guard member about its pivot pin 332 causes different portions of that member to become active to cover the driver and these different portions are located different distances from the center of the pivot pin 332. Consequently, the different covering portions of the guard member 3311 move at different speeds about the pivot pin 332 during the rotary motion of the guard member 330. To ofiset this factor, which is apt to result in exposing the driver at some time or other during its travel, the above described arm 334 and link 336 act as a toggle which, upon advance of the driver bar 266, is moved toward a zero position, with the result that movement of the guard member is decelerated, slowing down the covering portions the distance between which and the pin 332 increases at that time. Reversely, on rearward movement of the driver bar 266, the movement of the guard member is accelerated.

The anvil The previously mentioned anvil 22 has a stem 340 (Fig. 1) which is mounted in a bracket 362 provided on the machine frame 20 at the front of the machine. The stem 346 is adjustable in the bracket 342 heightwise and Widthwise of the machine and is held in adjusted position by clamping screws 3 34, 346, a set screw 3 38 serving the purpose of making fine adjustments for changing the heightwise position of the anvil. As previously pointed out the anvil engages the inner side or rear face of the insole lip and thus it supports the lip against the thrust of the wiper head '66 as well as the thrust of the driver and the fastening inserted by it. Moreover, the shoe is guided by the contact of the insole lip with the anvil. 'The anvil, of course, serves the additional purposealready described, of deflecting the leading end portio-n'of the fastening after it has fully pierced the margin of the upper and the insole lip to deflect that portion of the fastening and turn it back into the work.

The machine operation In the operation of the illustrated machine, a work piece comprising .an upper U assembled on a last L carrying a lipped insole I on its bottom is presented to the machine with the last bottom up and the inner side of the insole lip resting against the anvil 22 at a location where the fastening inserting operation is to begin. The margin of the upper is placed between the open jaws of the gripper 24 which is in its lowermost position. The clutch controlling the rotation of the cam shaft 28 is then engaged to initiate the operation of the machine. The different actuating mechanisms of the machine are so designed that the sequence of the operations in one cycle of the machine is as follows: The wire receiving and severing roll 2l6 is first rotated into its wire receiving position while the wiper head is still in its rearward inoperative positon and the gripper is down and open. Thereupon the wire feeding mechanism is actuated to feed a length ofwire into the roll 2!6 which then is rotated into its fastening inserting position, thereby severing the fed-in length of wire from the strand to form a fastening and to locate the fastening in the path of the operative movement of the driver. Then the gripper is closed upon the upper and elevated to tension the upper heightwise of the last, as illustrated in Figs. 9 and 10. Simultaneously with the initiation of the gripper operation, the Wiper head 86 begins its forward movement into engagement with the tensioned margin of the upper.

The wiper head 86 during its continued forward movement is caused to wipe the margin of the upper inwardly over the insole into firm engagement with the feather portion of the insole and the lip and into the crease formed by the feather and the lip. The wiper head, having completed its wiping operation, is held in its forward position to hold the margin of the upper in its lasted position while the driver is released by the tripping-of the latch 296 to insert a fasten-- ing through the margin of the upper and the lip in the manner described (see Figs. 11 and 12). Thereupon the various instrumentalities are returned to their initial positions and a new portion of the shoe is presented to the operating instrumentalities preparatory to the next upper tensioning and fastening inserting operation.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a fastening inserting machine, a throat member movable toward and from a work piece presented to the machine, a driver movable in the throat member to insert fastenings into the work, cam operated means for moving the throat member and the driver as a unit toward the work, spring operated means for actuating the driver to drive a fastening while the throat member is in engagement with the work, means for holding said spring operated means in a cocked position during movement of the throat member and the driver as a unit toward the work, means for releasing said holding means to actuate the driver, said cam operated means being adapted, after the actuation of the driver, to move said spring operated means back into its cocked position thereby to withdraw the driver and to return the throat member into its initial position.

2. In a fastening inserting machine, a throat member movable into and out of engagement with a work piece presented to the machine, a driver movable in the throat member to insert fastenings into the work, a Wire receiving member movably mounted in the throat member, means for feeding a length of wire into the wire receiving member, operating means for moving the wire receiving member between two fixed positions one of which is a wire receiving position and the other a fastening presenting position, and means associated with said operating means and adapted to be tensioned after movement of the wire receiving member into either one of said positions so as to hold the wire receiving member firmly in either of said positions.

3. In a fastening inserting machine, a throat member movable into and out of engagement with a work piece presented to the machine, a driver passage in the throat member, a driver movable in said passage to insert fastenings into the work, a wire receiving member movably mounted in the throat member, means for feeding a length of wire into the wire receiving member, and operating means for moving the wire receiving member from a wire receiving position to a fastening presenting position in alinement with said driver passage thereby to sever the wire portion fed into said wire receiving member from the wire and to present said wire portion as a straigh fastening to the driver to be inserted endwise by the latter into the work, said operating means including means adapted to be tensioned after movement of said Wire receiving member into fastening presenting position so as to hold the wire receiving member firmly in its fastening presenting position.

4. In a fastening inserting machine having a throat member movable into and out of engagement with a Work piece presented to the machine, a driver passage in the throat member, a driver movable in said passage to insert fastenings into the work, a roll rotatably mounted in the throat member and provided with a passage adapted to receive a length of Wire, means for successively feeding variable lengths of wire into said roll passage, reciprocating means adapted yieldingly to rotate said roll with relation to the throat member out of its wire receiving position to sever the wire portion received by the roll and to locate said wire portion in the driver passage to be inserted by the driver as a fastening and adapted yieldingly to rotate said roll back into its wire receiving position after the insertion of the fastening by the driver, and adjustable stops for limiting the motion of said reciprocating means in both directions.

ROBERT H. LAWSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS FOREIGN PATENTS Country Date France Aug. 31, 1916 Number Number 

